<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>背景</title>
    <style>
        body{
         background-color:pink ;
            margin: 10px;
            padding: 10px;
            border: 10px;
            width: 23px;
            height: 20px;
            max-height: 20px;
            max-width: 20px;
            max-height: 20px;
            min-width: 20px;
            max-inline-size: 12px;
            max-lines: 2;

        }
    </style>
</head>
<body>

<audio>

</audio>

</body>
</html>